CONTROL METHOD FOR SINGLE-PHASE INVERTER

PROBLEM TO BE SOLVED: To provide a control method for a single-phase inverter, capable of preventing sharp system fluctuations including an excitation inrush current of a transformer from causing overcurrent, when the single-phase inverter is connected to a no-power source single-phase load system, having no AC power source. SOLUTION: In the control method for the single-phase inverter that supplies electric power to the single-phase load system, to which no AC power source is connected, AC voltage control is performed that controls the output voltage value of the inverter, so as to keep a system voltage value constant and an inverter output value is obtained as DC amount by using the inverter output current detected value or the detected value of a current that flows out to a system that is to be connected. Furthermore, a current command value is generated from the inverter output value of the DC amount, and the AC voltage control is corrected by controlling the single-phase inverter output current so as to follow the command value. COPYRIGHT: (C)2008,JPO&INPIT